Outriggers for vehicles



5, 1953 I E. v. GARNETT 3,100,049

OUTRIGGERS FOR VEHICLES Original Filed April 28, 1958 2 Sheets-Sheet lINVENTOR. EDWARD ll GARNETT BY E. WW

A TT'OR/VE Y 1963 E v. GARNETT 3,100,049

OUTRIGGERS FOR VEHICLES Original Filed April 28, 1958 2 Sheets-Sheet 2INVENTOR. EDWARD l/ GAHNETT A TTO/P/VEY 3,100,049 OUTRIGGERS FORVEHICLES Edward V. Garnett, 3963 Walnut St., Denver, Colo. Originalapplication Apr. 28, 1958, Ser. No. 731,485, now Patent No. 3,056,510,dated Oct. 2, 1962. Divided and this application Aug. 22, 1961, Ser. No.133,117

6 Claims. (Cl. 212-145) This invention relates to outriggers, and moreparticularly to Outriggers for vehicles, such as trucks utilizingderricks or the like. This application is a division of my copendingapplication Ser. No. 731,485, filed April 28, 1958, and entitled Derricktor Vehicles, now US. Patent No. 3,056,510.

Among the objects of this invention are to provide an outrigger which isparticularly adapted for use on a vebicle carrying a derrick or thelike; to provide such an outrigger which will prevent the vehicle fromtipping over when the derrick is extended, such as horizontally to 'fullposition, on either side of the vehicle; to provide such an outriggerwhich positively supports the superstructure of the derrick from theground; and to provide such an outrigger which may be folded to acompact storage position, out of the way of other parts.

Additional objects and the novel features of this invention will becomeapparent from the description which follows, taken in conjunction withthe accompanying drawings, in which:

FIG. 1 is a perspective view, taken from a point rearwardly and to oneside of a truck, showing a derrick with its boom in extended position,and the Outriggers in supporting position on either side of the truck;

FIG. 2 is an enlarged end elevation of an outrigger of FIG. 1 inextended position;

FIG. 3 is a fragmentary side elevation of the outrigger of FIG. 2 inextended position and certain associated parts, the retracted positionof the outrigger being shown in dotted lines; and

FIG. 4 is an enlarged fragmentary side elevation similar to FIG. 3,showing a modified outrigger in :a further extended position and analternative supporting assembly.

As illustrated in FIG. 1, a derrick may be mounted on a vehicle V, suchas a panel type truck as shown, having a cab and a panel body 11. Thederrick may include a boom B which is pivotally attached to a bracketlever 12, which in turn is pivotally mounted on a turntable 13, which issupported by a superstructure S. At each side, the superstructure S maybe provided with an outrigger 0, adapted to be extended downwardly andoutwardly at each side from the lower portion of the superstructure S,so as to provide lateral support for the vehicle, particularly in theevent that the load is being handled at one side or the other thereof.The outer boom B may encompass an inner boom 1, which is adapted to beextended by hydraulic means, such as shown and described in my aforesaidapplication Ser. No. 731,485. The outer boom B may be raised and loweredto any desired angular position by a hydraulic cylinder 14, pivotallymounted at its inner end on turntable T, and having a piston rod whichis pivotally connected to a bracket 16 mounted on the underside of boomB adjacent the outer end thereof. The operation of the bracket lever 12,in raising the boom B to the position shown in FIG. 1 from a storageposition in which the outer end of the boom rests on a support 17mounted at one side of the panel body 11, is more fully explained in myaforesaid application Ser. No. 731,485. As will be evident, the boom Bmay be moved from a lower position and may be extended to the extentshown in FIG. 1, or to any intermediate position between the retractedand [fully extended positions. The derrick may also be provided with ahoisting cable 18 which passes over a sheave mounted in a bracket 19 atthe outer end or the inner boom as well as a sheave mounted in bracket17, and thence to the center of turntable 13, the cable 18 passingbetween the two sides of the bracket lever 12 and thence to a winchmounted in the superstructure S.

In accordance with this invention, as in FIGS. 2 and 3, each outrigger 0may include an arm 20, such as formed by a channel, provided at itsouter end with a pad 21, adapted to engage the ground when the outriggeris in the down position shown in FIG. 1. The inner end of the arm 20 maybe pivoted on a pin 22 extending between a pair of brackets 23,depending from a base 24 of the superstructure S. Each respectiveoutrigger may be actuated by a hydraulic cylinder 25 provided with apiston rod 26, the outer end of the piston rod 26 being pivotallyconnected to both the inner end of a lower link 27 and the outer end ofan upper link 28, as by a pin 29. The inner end of cylinder 25 may bepivotally connected to a bracket 30 which depends from base 24 of thesuperstructure S, as by :a pin 31. The lower link 27, which may be achannel having a lesser width than the width between the channel flangesof arm 20 and thereby adapted to fit within the same when in theretracted or dotted position shown in FIGS. 3 and 4, may be pivotallyconnected at its outer end to the outer end of arm 20 by a pin 32. Theupper link 27, which may be tubular but bifurcated at its outer end, maybe pivoted at its inner end on a pin 35, extending between the sides ofa U-shaped bracket 36 mounted latop base 24 of the superstructure S, theinner end of upper link 28 may be provided with a bearing sleeve 37surrounding pin 35. Suitable hoses may lead from the superstructure S tothe hydraulic cylinder 25 to supply hydraulic fluid to the respectiveends of the cylinder. As will be evident from FIG. 1, each outrigger 0may be similar but complementary in construction. As will be evident,when piston rod 26 is extended to the position of FIG. 3, the arm 20will be moved downwardly until pad 21 engages the ground. As will beevident from FIG. 3, arm 20 and also cylinder 25 will resist the forcestending to overturn the vehicle. However, unless the hydraulic fluid incylinder 25 is maintained at full pressure, there may be a tendency forpiston rod 26 to move into cylinder 25 upon the imposition of heavyforces.

By properly proportioning the parts, as by providing lengthened arm 20,link 27', cylinder 25' and piston rod 26', addition extension of pistonrod 26 will cause links 27' and 28 to extend in a straight line or to beoverthrown past a straight line, as in FIG. 4, so that forcestransmitted from the vehicle to the ground will be resisted by the arm20' and by the links 27' and 28, when in a straight line or nearly in astraight line. When links 27 and 28 are in a straight line, the onlyforce necessary for the hydraulic fluid in cylinder 25' to resist is thecomponent of force tending to buckle the links 27 and 28', which isrelatively small. However, when the links 27' and 28' are overthrownpast a straight line, the tforce tending to buckle links 27 and 28 willplace piston rod 26' in tension, so that hydraulic fluid pressure incylinder 25' tending to extend rod 26 need not be maintained at fullvalue. For resisting greater forces, a larger pin 35 may be mounted in alarger or heavier bracket 40 of FIG. 4 and larger pin 22' may be mountedin a larger or heavier bracket 41. Similarly, pin 29', bracket 30 andpins 31' and 32' may be larger or heavier than the corresponding partsof FIG. 3. p

In each of FIGS. 3 and 4, when piston rod 26 or 26' is fully retracted,links 27 or 27' and 28 or 28 will form a small acute angle therebetween,with link 27 or 27 being received in arm 20 or 20' and link 28 or 28being partially received in link 27 or 27 as in the dotted positionsshown. Thus, in storage position, each outrigger will be very compactand will not extend laterally beyond the superstructure S. As will beevident, when an outrigger is moved to the down or extended position ofFIGS. 3 and 4, pad 21 will engage the ground at a point spaced atsufiicient distance laterally from the body of the vehicle that anytendency tor the vehicle to overturn, upon the imposition of a heavyload upon the derrick when operating at one side of the vehicle, will beovercome. It will be noted that such vehicles are normally provided withsprings, but that the Outriggers engage the ground positively and thatwhen both 'outriggers are down, the superstructure S is supportedpositively from the ground.

From the foregoing, it will be evident that an outrigger constructed inaccordance with this invention fulfills to a marked degree therequirements and objects herein'before set forth. The use of theoutrigger of this invention will prevent a vehicle carrying :a derrickfrom tipping over when the derrick is extended horizontally to aposition on either side of the truck and is fully loaded. Also, by useof the outrigger pivotally mounted on each side of the superstructure,the superstructure may be solidly supported from the ground, at eachside of the vehicle, so that comparatively heavy loads may be handled ateither side of the vehicle. The outriggers are arranged, by use ofchannel shaped supporting arms and links, so that they may be folded toa very compact storage position, out of the Way of other operating partsof the truck or derrick.

Although a preferred embodiment of this invention has been described andillustrated, it will be understood that other embodiments may exist andvarious changes and variations made, without departing from the spiritand scope of this invention.

What is claimed is:

1. An outrigger for use with a vehicle mounted derrick comprising anupper link pivotally connected at one end to said vehicle; a lower link;first pivot means connecting the opposite end of said upper link to oneend of said lower link; an arm pivotally connected at its inner end tosaid vehicle; second pivot means connecting the other end of said lowerlink to the outer end of said arm; and extensible and retractablehydraulic means operatively connected between said vehicle and saidfirst pivot means, said Ihydraulic means thereby being adapted to movesaid links to either raise or lower said arm.

2. An outrigger as set forth in claim 1, wherein said arm is provided atits outer end with a pad for engaging the ground.

3. An outrigger as set forth in claim 1, in which said upper link ispivoted to said vehicle at a point spaced upwardly from the inner end ofsaid arm; and said hydraulic means is pivotally connected to saidvehicle inwardly from the pivotal connection of each of said upper linkand said arm.

4. An outrigger as set forth in claim 1, in which said arm is retractible to a generally vertical position by said hydraulic means; and saidarm is channel shaped and has a size such that said lower link will bereceived in said channel of said arm when said arm is retracted to saidgenerally vertical position.

5. An outrigger as set forth in claim 4, wherein said lower link is alsochannel shaped and has such a size that said upper link is received inthe channel thereof when said arm is raised to said generally verticalposition.

6. An outrigger as set forth in claim 1, in which said hydraulic meansis extensible to an extent such that said lower links are overthrownpast a straight line position when said arm is moved downwardly toengage the ground.

References Cited in the file of this patent UNITED STATES PATENTS2,557,484 Wagner et al. June 19, 1951 2,621,811 Lull Dec. 16, 19522,663,433 Le Clair Dec. 22, 1953 2,961,102 Pitman Nov. 22, 19603,032,914 McGuire et a1. Mar. 6, 1962

1. AN OUTRIGGER FOR USE WITH A VEHICLE MOUNTED DERRICK COMPRISING ANUPPER LINK PIVOTALLY CONNECTED AT ONE END TO SAID VEHICLE; A LOWER LINK;FIRST PIVOT MEANS CONNECTING THE OPPOSITE END OF SAID UPPER LINK TO ONEEND OF SAID LOWER LINK; AN ARM PIVOTALLY CONNECTED AT ITS INNER END TOSAID VEHICLE; SECOND PIVOT MEANS CONNECTING THE OTHER END OF SAID LOWERLINK TO THE OUTER END OF SAID ARM; AND EXTENSIBLE AND RETRACTABLEHYDRAULIC MEANS OPERATIVELY CONNECTED BETWEEN SAID VEHICLE AND SAIDFIRST PIVOT MEANS, SAID HYDRAULIC MEANS THEREBY BEING ADAPTED TO MOVESAID LINKS TO EITHER RAISE OR LOWER SAID ARM.